Hendrik Boom wrote: > > Malte Cornils wrote: > > > Does anyone have a clue why 2 GiB is the limit?
It is not for me. I can malloc() up to 2.9G.
> It seems malloc restricts itself to the user space.
> But if you were te replace malloc (or provide your own allocation
> and freeing methods, which *miht* be possible in C++) you could do
> the following.
Although I am sure the details of malloc() are involved I don't think
that is squarely the problem here. I have a simple test program which
mallocs and reports and I can definitely get to 2.9 on a 32-bit system.
Out of memory at 2934 M
Bob
Here is the very simple test program.
#include <stdio.h>
#include <stdlib.h>
#include <malloc.h>
const int amountK = 1024;
int main()
{
unsigned long count = 0;
for (;;) /* loop forever */
{
char *p = malloc(amountK*1024);
printf("%08lu 0x%lx\n",count++,(unsigned long)p);
if (p == 0)
{
printf("Out of memory at %ld M\n",count / (1024 / amountK));
exit(0);
}
}
return 0;
}
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